The internet acronym for "Best Friend, Brother and Friend" made famous (sort of) on youtube by Justkiddingfilms in their halloween special. This acronym is used by Unco Same and Unco Chin, and usually confuses the vietnamese duo because of the use of many letters.
Unco Chin(in vietnamese accent): Unco Same is my Best friend, Brudda, and Friend!
Dashawn: Your best friend, brother and... friend?
Unco Chin: Yeah! B.F- no wait- B.F.aFB-no i mean-B.a.F.-
Dashawn(interrupting): Don't hurt yourself know.
(unco chin tries saying B.F.B.a.F.)